![Rugby guru behind NFL revolution backs 'phenomenal' Louis Rees-Zammit – but issues warning](https://cdn.newsserve.net/ONPglobe256.png)
Rugby guru behind NFL revolution backs 'phenomenal' Louis Rees-Zammit – but issues warning
EXCLUSIVE: Louis Rees-Zammit's NFL dream is close to being realised amid reports he'll join the Kansas City Chiefs - but rugby coach and NFL mastermind Richie Gray has raised caution
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